DjVu is a web-centric format for distributing documents and images. DjVu was created at AT&T Labs-Research and later sold to LizardTech Inc. DjVuLibre is a GPL implementation of DjVu maintained by the original inventors of DjVu.

TinyXML is a simple, small, minimal, C++ XML parser that can be easily integrating into other programs. It reads XML and creates C++ objects representing the XML document. The objects can be manipulated, changed, and saved again as XML.
*Please Note* that TinyXML development has stopped and all development has moved to TinyXML-2. TinyXML-2 is available at https://github.com/leethomason/tinyxml2

Fast C++ matrix library with easy to use functions and syntax, deliberately similar to Matlab. Uses template meta-programming techniques.
Also provides efficient wrappers for LAPACK, BLAS and ATLAS libraries, including high-performance versions such as Intel MKL, AMD ACML and OpenBLAS.
For more details, see http://arma.sourceforge.net